OSCPRO ONLY - OSC website upgrade +

I need to basically upgrade my entire OSC based website. I'm having big trouble w/ my Paypal module as well. I want to add several modules to make my website very user friendly, and also get some website design advice (and work done) to make my website even better than it is now. I'm also looking for an OSC EXPERT to update/add modules as relevant on a regular basis. Basically, I need someone to take care of all my OSC technical issues and get/implement the occasional suggestion to improve my web gallery (I sell American Indian Art). Thank You!